From ce55c049459cff0034cc1bcfdce3bf343a2d6317 Mon Sep 17 00:00:00 2001 From: Jing Zhang Date: Fri, 18 Jun 2021 22:27:06 +0000 Subject: KVM: stats: Support binary stats retrieval for a VCPU Add a VCPU ioctl to get a statistics file descriptor by which a read functionality is provided for userspace to read out VCPU stats header, descriptors and data. Define VCPU statistics descriptors and header for all architectures. Reviewed-by: David Matlack Reviewed-by: Ricardo Koller Reviewed-by: Krish Sadhukhan Reviewed-by: Fuad Tabba Tested-by: Fuad Tabba #arm64 Signed-off-by: Jing Zhang Message-Id: <20210618222709.1858088-5-jingzhangos@google.com> Signed-off-by: Paolo Bonzini --- arch/powerpc/kvm/book3s.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) (limited to 'arch/powerpc/kvm/book3s.c') diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index 1f004837f9c5..61229302bce2 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -55,6 +55,51 @@ const struct kvm_stats_header kvm_vm_stats_header = { sizeof(kvm_vm_stats_desc), }; +const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = { + KVM_GENERIC_VCPU_STATS(), + STATS_DESC_COUNTER(VCPU, sum_exits), + STATS_DESC_COUNTER(VCPU, mmio_exits), + STATS_DESC_COUNTER(VCPU, signal_exits), + STATS_DESC_COUNTER(VCPU, light_exits), + STATS_DESC_COUNTER(VCPU, itlb_real_miss_exits), + STATS_DESC_COUNTER(VCPU, itlb_virt_miss_exits), + STATS_DESC_COUNTER(VCPU, dtlb_real_miss_exits), + STATS_DESC_COUNTER(VCPU, dtlb_virt_miss_exits), + STATS_DESC_COUNTER(VCPU, syscall_exits), + STATS_DESC_COUNTER(VCPU, isi_exits), + STATS_DESC_COUNTER(VCPU, dsi_exits), + STATS_DESC_COUNTER(VCPU, emulated_inst_exits), + STATS_DESC_COUNTER(VCPU, dec_exits), + STATS_DESC_COUNTER(VCPU, ext_intr_exits), + STATS_DESC_TIME_NSEC(VCPU, halt_wait_ns), + STATS_DESC_COUNTER(VCPU, halt_successful_wait), + STATS_DESC_COUNTER(VCPU, dbell_exits), + STATS_DESC_COUNTER(VCPU, gdbell_exits), + STATS_DESC_COUNTER(VCPU, ld), + STATS_DESC_COUNTER(VCPU, st), + STATS_DESC_COUNTER(VCPU, pf_storage), + STATS_DESC_COUNTER(VCPU, pf_instruc), + STATS_DESC_COUNTER(VCPU, sp_storage), + STATS_DESC_COUNTER(VCPU, sp_instruc), + STATS_DESC_COUNTER(VCPU, queue_intr), + STATS_DESC_COUNTER(VCPU, ld_slow), + STATS_DESC_COUNTER(VCPU, st_slow), + STATS_DESC_COUNTER(VCPU, pthru_all), + STATS_DESC_COUNTER(VCPU, pthru_host), + STATS_DESC_COUNTER(VCPU, pthru_bad_aff) +}; +static_assert(ARRAY_SIZE(kvm_vcpu_stats_desc) == + sizeof(struct kvm_vcpu_stat) / sizeof(u64)); + +const struct kvm_stats_header kvm_vcpu_stats_header = { + .name_size = KVM_STATS_NAME_SIZE, + .num_desc = ARRAY_SIZE(kvm_vcpu_stats_desc), + .id_offset = sizeof(struct kvm_stats_header), + .desc_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE, + .data_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE + + sizeof(kvm_vcpu_stats_desc), +}; + struct kvm_stats_debugfs_item debugfs_entries[] = { VCPU_STAT("exits", sum_exits), VCPU_STAT("mmio", mmio_exits), -- cgit v1.2.3